Optical constants of CDGM - ZLAF (Dense lanthanum flint)
H-ZLAF52
Wavelength:
µm
(0.340–2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2=3.16943454-0.0124379117λ^{2}+0.0322101116λ^{-2}+0.000181456299λ^{-4}+8.90652926\text{×}10^{-05}λ^{-6}-1.91933145\text{×}10^{-06}λ^{-8}$$Conditions & Spec sheet
n_absolute: false
wavelength_vacuum: false
temperature: 20.0 ℃
thermal_dispersion:
- type: "Schott formula"
coefficients: 7.46e-06 1.78e-08 -1.51e-10 7.13e-07 6.48e-10 0.252
nd: 1.806099
Vd: 40.945389
glass_code: 806410
density: 4.45 g/cm3
thermal_expansion:
- temperature_range: -30 70 ℃
coefficient: 5.8e-06 K-1
- temperature_range: 20 300 ℃
coefficient: 7.2e-06 K-1
dPgF: -0.005
climatic_resistance: 1.0
References
CDGM Zemax catalog 2022-06 (obtained from http://www.cdgmgd.com)
See also CDGM optical glass data sheets